81(90+x)=90x

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Solution for 81(90+x)=90x equation:


Simplifying
81(90 + x) = 90x
(90 * 81 + x * 81) = 90x
(7290 + 81x) = 90x

Solving
7290 + 81x = 90x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-90x' to each side of the equation.
7290 + 81x + -90x = 90x + -90x

Combine like terms: 81x + -90x = -9x
7290 + -9x = 90x + -90x

Combine like terms: 90x + -90x = 0
7290 + -9x = 0

Add '-7290' to each side of the equation.
7290 + -7290 + -9x = 0 + -7290

Combine like terms: 7290 + -7290 = 0
0 + -9x = 0 + -7290
-9x = 0 + -7290

Combine like terms: 0 + -7290 = -7290
-9x = -7290

Divide each side by '-9'.
x = 810

Simplifying
x = 810

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